** Official ** Gigabyte UD3 P45 Series -- EP45-UD3 / EP45-UD3R / EP45-UD3P

[pangingIII]

Ghostleader,

i didn't run prime95 very long i just wanted to test a little bit on ram stability.



however, i continued on the ram kit stability testing with HCI memtest...




right now i'm testing the ram kit running at 480fsb 5:6 DDR2-1152MHz (testing its stock/spec ram speed) at 1.82v VDimm and 1.20v vMCH.

about you thinking on buying 2x2GB kit, it would be best if you can get the G.Skill PC2-9600 PI kit.
this OCZ PC2-9200 is not available as a new retail ram kit any more afaik. and even you can get one at eBay or some sort it's not a guarantee you will have the ram kit running at DDR2-1200 and at low volts. for the G.Skill (PC2-9600) PI one you can exchange it at least.

[clo007]

@clo007.

bad board, bad dimm slots or bad ram kit or these 2 specific ram kits have an issue with default bios. can't tell you exactly without trying the hardwares.
but, try 1 stick ram in first dimm slot, clear cmos, and startup the system, if things seems normal during the first startup, then just left bios at default settings and test this ram stick with memtest program in DOS,
whatever results come out of the mem testing. then replace the stick of ram with another stick, clear cmos, start the system and run a memtest on this stck. if both sticks don't fail memtest? the ram kit is most likely ok.

then try this, with the last stick of ram in first dimm slot and you're already sure that it passes the prior memtest, reflash your bios (in DOS mode if you can) with the same bios version or any release bios version's that you like. after the flashing is completed, power off the system, install the 2 sticks ram in the 2 yellow dimm slots, clear cmos, and startup the system. then please tell me what's the results that you get from and after doing all these. apologies for this long post, i don't know how to make it shorter.

Thanks for the suggestion. I memtested both sets of ram and they passed fine.
I am going to reflash bios and give it a shot that way. I am at work today so I will do this when I get home.

This whole scenarios is just odd to me. It runs great fro 2 weeks then this issue occurs. 1 stick of ram, any size amount runs fine in any slot but as soon as I put in 2 sticks it doesn't boot.

[pangingIII]

Test OCZ PC2-9200 (DDR2-1150) Flex II 4GB kit... running at around its rated clock speed.

480 CPU FSB 5:6 DDR2-1152, BIOS set Turbo, 5-5-5-18 / 5-5-9-78-5 tRD 8 at 1.84v.

Dual instances of Prime95 custom (with a quite large amount of system memory are used in the test) only.




this CPU FSB should work great (and plenty) with a Quad E0, as i plan to use this ram kit when i buy a new Quad and may be another UD3R board (this will be my 3rd UD3R's buying btw), since myself not a hardcore overclocker and like to concentrate on a system that uses low volts, low heat and less cooling requirements but still offers plenty performance, 480fsb on a Quad E0 should work.
i think it would be too great a problem if i want to run 480fsb with 4:5 (memory running at DDR2-1200MHz) when i overclock this ram kit with a Quad, anyways, i'll check it out whenever i can.

[voigts]

That's one nice chip you have there PangingIII.

Well here is what I have after several days of tweaking/testing. Everything is auto except for Vcore, MCH Core, MCH Ref manually set at .75, CPU PLL manually set at 1.50, 2.00d strapping, RAM manually set to SPD.

If I try to go up from 4.00GHZ at 8x to 4.25GHZ at 8.5x with everything else the same, I have to jump way up to 1.375v Vcore. I'm kind of disappointed with that in that my goal was 4.25GHZ with lower Vcore. I may lower the FSB a bit to see if I can up the CPU from 4.00GHZ and still keep the Vcore low.

[clo007]

Mobo issue update:

I flashed my bios to F5 successfully. I still can not have 2 sticks of ram in the motherboard. It boots up fine with one stick, of any kind, but as soon as it has 2 sticks, it won't post to the bios.

[ezaleina]

This is my 1st attempt beyond 4Ghz barrier.,only can successfully boot with 9x multi with PL9.,i try with 8x525 cannot boot into windows..it's not very impressive result.,all scores below 9-10k..

[LazyDogNet]

@voigts

I have an E8500 too (with the UD3R board though), but I also needed a 1.375 VCore setting to stay stable at 4.2Ghz (495 x 8.5). Most of my others settings are pretty close to stock (CPU Term 1.2, CPU PLL 1.5, MCH Core 1.2, MCH Ref .68)

I'm using 4GB of Corsair PC8500 RAM at 2.1v running 5-5-5-15

I've seen a lot of people pushing higher CPU VCores around here and I was hoping to stay at 1.35 or under, but couldn't find a good combo to get there. I'm comfortable with where I'm at with this setup, since my temps aren't running real high (CPU Temp is around 32C at idle and hitting the low 50's under stability testing....except for IntelBurnTest when it reaches 60C...Ouch!)

LDN

[pangingIII]

Mobo issue update:

I flashed my bios to F5 successfully. I still can not have 2 sticks of ram in the motherboard. It boots up fine with one stick, of any kind, but as soon as it has 2 sticks, it won't post to the bios.

i think, since you're sure your ram kit is okay, it's time to RMA the board, it has to go back first.

on a side note: about the hardware that's listing in your sig, don't you think your power supply may be a little bit too small?

[clo007]

Yeah, This is my second EP45-UD3R. First one was DOA! I think I have 4-5 days left on my 30-days from newegg.
About the PSU, the Corsair HX series are known to be awesome PSUs. The 520watts it puts out is actually contiunious and not a peak load like other manufacturers spec. Also, I basically had all the same components in my rig except an Abit IP-35E and Q6600, and it ran flawless. The EP45-UD3R and Q9550 should not be drawing anymore power than the previous mobo/cpu combo I had, so I don't see how that could be an issue.


Edit: So it seems b/c this mobo is a RMA replacement from my first DOA, I am not eligible for another RMA. That sucks.

[voigts]

@voigts

I have an E8500 too (with the UD3R board though), but I also needed a 1.375 VCore setting to stay stable at 4.2Ghz (495 x 8.5). Most of my others settings are pretty close to stock (CPU Term 1.2, CPU PLL 1.5, MCH Core 1.2, MCH Ref .68)

I'm using 4GB of Corsair PC8500 RAM at 2.1v running 5-5-5-15

I've seen a lot of people pushing higher CPU VCores around here and I was hoping to stay at 1.35 or under, but couldn't find a good combo to get there. I'm comfortable with where I'm at with this setup, since my temps aren't running real high (CPU Temp is around 32C at idle and hitting the low 50's under stability testing....except for IntelBurnTest when it reaches 60C...Ouch!)

LDN

Thanks for the info. I have run OCCT and Prime 95, but still have to run IntelBurnTest. I'm on water with dual MCR320s, and I idle at 31c and prime and OCCT at about 40c. I wanted to run about 500fsb to nearly max my RAM, but like you, simply can't find a combination that keeps me under 1.35v Vcore at 4.25GHZ.

There are so many opinions about voltages that I'm not sure that to believe is OK when it comes to Vcore. Some say under 1.35v, some 1.40, and some 1.45v as long as the temps are OK.

[LazyDogNet]

I'm on water with dual MCR320s, and I idle at 31c and prime and OCCT at about 40c. I wanted to run about 500fsb to nearly max my RAM, but like you, simply can't find a combination that keeps me under 1.35v Vcore at 4.25GHZ.

There are so many opinions about voltages that I'm not sure that to believe is OK when it comes to Vcore. Some say under 1.35v, some 1.40, and some 1.45v as long as the temps are OK.

It sounds like your system is alot better equiped to handle the high temps than mine (I'm just air cooled with Cool Master case, some 120mm case fans, and a ZEROtherm Zen FZ120 CPU Cooler). I believe I read on the Intel website a month or so back that the E8500 is rated to support voltage up to 1.3625V, but the absolute max is 1.45v. If that's really the case, than the 1.3725 I'm currently running isn't too far over the rated line.

I figure that even if I shorten the life of my CPU by (let's just say) 25% because I OC it, it should still run for another 5 years plus.....a E8500 CPU 5 years from now won't be much of a CPU anyway. Honestly, in almost 15 years of building computers, I've never lost a CPU (motherboards - yes, ram - yes, video cards - yes, power supplies - yes, hard drives - of course, but I've never just blown a CPU....maybe I've just been lucky).

I think the biggest concern is throwing just way too much voltage through the system that you actually fry something (either by your voltage settings or by maybe a bad PS). I was just reading one of the tech sites where they described how they pushed it too far and fried a $600 CPU...ouch! Luckily, I got a great deal on my E8500 and was even more fortunate to receive a E0 revision of it.....just dumb luck I guess.

Good luck to you and please post if you have any success bringing down the core voltage while keeping the speed up there.

LDN

BTW - Love the Wooden Case!!!!

[Angmaar]

If I want to run my FSB at 400 what voltage settings do i need?

I am an OC'ing noob and I just got this board yesterday.

[LazyDogNet]

If I want to run my FSB at 400 what voltage settings do i need?

I am an OC'ing noob and I just got this board yesterday.

I haven't seen much talk about E2180 CPU's on this thread (and I don't have any experience with them personally), but if I was in your shoes, I'd start by installing EasyTune and trying one of the default OC profiles and testing with HyperPI, Prime95, or Orthos to see if it's stable.....work your way up or down from there.

LDN

[Angmaar]

Ok, thanks. But in the bios I was wondering what changes the North Bridge Voltage. Is it the MCH core or the MCH reference or is that not it?

[pangingIII]

Edit: So it seems b/c this mobo is a RMA replacement from my first DOA, I am not eligible for another RMA. That sucks.

Sorry to hear that, you have a bad luck in a board, i bought first UD3R in around last october and i abuse mine i would say quite a lot and i still don't see anything wrong with it.

[LazyDogNet]

Ok, thanks. But in the bios I was wondering what changes the North Bridge Voltage. Is it the MCH core or the MCH reference or is that not it?

The MCH Core is the voltage for the North Bridge. Normally, you need to increase it as you increase your FSB (or from what I read here, even when you add more sticks of RAM to your system). I've also read many posts that state it's pretty safe to raise the North Bridge up to 1.6v, but I'm at 1.2v on my system.

There are alot of varibles to contend with on these boards. It usually takes a while to find the best combination. Take some time and go through this thread.....there's a ton of information as you go through the 43 pages.

LDN

[Angmaar]

Thanks!!

[voigts]

It sounds like your system is alot better equiped to handle the high temps than mine (I'm just air cooled with Cool Master case, some 120mm case fans, and a ZEROtherm Zen FZ120 CPU Cooler). I believe I read on the Intel website a month or so back that the E8500 is rated to support voltage up to 1.3625V, but the absolute max is 1.45v. If that's really the case, than the 1.3725 I'm currently running isn't too far over the rated line.

I figure that even if I shorten the life of my CPU by (let's just say) 25% because I OC it, it should still run for another 5 years plus.....a E8500 CPU 5 years from now won't be much of a CPU anyway. Honestly, in almost 15 years of building computers, I've never lost a CPU (motherboards - yes, ram - yes, video cards - yes, power supplies - yes, hard drives - of course, but I've never just blown a CPU....maybe I've just been lucky).

BTW - Love the Wooden Case!!!!

1.3725v Vcore being OK then makes sense. I've got a nice watercooling setup, and it really shows when you start stress testing. I ran IntelTestBurn a while ago and it only added maybe 7-8c to my OCCT and Prime95 temps. I maxed at 51c running IntelTestBurn at 1.3725v Vcore. I just hate that it takes so much Vcore just to go .25GHZ from 4 to 4.25.

Thank you on the case. It was a lot of work, but I am still enjoying the result 8 months later.

[Tulatin]

I'm looking at upgrading to an EP45-UD3P;

my current spec is

E8400 @ 4.0 (1.4~ I believe)
4x 1GB Kingmax @ CAS 5 / 1066
2x HD4870 (when the rma comes back) (1x 4870 / 1x 4850 for now)
2x Velociraptor 80GB In Raid0
1x 500GB, 1x 1TB, 2x Optical
2x 500GB (External Controller)
750W PSU.

I do need to upgrade due to the second PCI-E slot on my P5K-E being way too narrow. Would this or a P5Q-E be a better choice?

[Leeghoofd]

So you ask in the GB UP45 thread if they prefer the GB board over the Asus, that's like entering a mercedez dealer and ask if you shouldn't be better wit a BMW...

Most users here are very happy with their setups, this board absolutely flies with quads but in my own humble experience the Asus ones are easier to setup...

With the PCI-E Being too narrow you're talking about the bandwith of the 2nd slot for Xcrossfire action... have a look at both boards layouts and see what might work best with ya cards... I think the Gb will be a better option

[Barry]

Mobo issue update:

I flashed my bios to F5 successfully. I still can not have 2 sticks of ram in the motherboard. It boots up fine with one stick, of any kind, but as soon as it has 2 sticks, it won't post to the bios.

I had a similar problem and i ended up RMAing the MB,send it back changing bios won't change anything

[Barry]

Where do you find those mem. test in Everest? I have both,the old one and Ultimate but its a trial verson.

I had alot of memery dumps/blue screems last night. I upped the voltage to 2.1 on the ram and so far it hasnt acted up.

[ezaleina]

This my new result 4.23Ghz.,still testing it.,wanna try to low the vcore abit..

[fatguy1992]

Could someone please tell me what the PCI-E MHz does? It default is 100MHz? If I raise does it make the video card go faster .

Thanks

[Jor3lBR]

Could someone please tell me what the PCI-E MHz does? It default is 100MHz? If I raise does it make the video card go faster .

Thanks

Just what it says, controls PCI-e main clock.

Teorically you well get a very small gain in benching in FPS, seen some benches at 120Mhz run faster then 100Mhz.

That if you don;t use sata drives (use IDE). If using SATA anything greaer then 108Mhz will shorten the hdd's life span.

I would keep that between 100 to 110 for daily use.